opensourcestartups
                          _|                                                                                                  (             h       . )            g          '                    #    -        @          
        \[                                                                                         } }                                            .               g|    >                         +           .             
                             =<    H                          {         .       ;    \ (                                                     .                                         .      !                             
   .               ]   @        \                                  "                       ;                          .      ]         .           .            [       .  .                                          .     
           @             `                                                    _  @                                                         :           *                0.      #                            +              
                                 .         :                                 !(                                                                 .                       /    .                                   ^        H 
                              *      `                     )                @                                                          >                 0                                                    !             
            _                                                          .       *                                                 .            {* #                       |                  '     1   - 0 /             ;   
  .:             /               /     1                                                      ]              |                                  +            _      `                       .  -~          /                
              `                                 .              .                                  ]                            .                                                                                            
                     ,                                  =         /<                             <              /       !    ]        0.                                                          <             .           
                                                           [                 {                   g                                                               \             !        "                                   
               [*    0                                                                            |                        ,                                     "    } ]     ._                             \              
                      "  )       _        g           g                           ^                              /      `           =                                  |            *                   }                   
        1  -                                                                           '/            _                                                                                {#         ~   (                      
  .                                     _                                                                     ;                              1       .    "                .                                                
                               [0                                                        .             @                                 ]                        #              "               g             g            
                                >  #  @                  .                  :                               .               .  >                    .   )_                   .                                              
             }    h                                  ,                 >             >                          }                                     .                            -             ;     #                    
          =                                                              .            \          ^                  +       H `    !             .                                 0     ]              ;                   
                                                               (             /          |        ( ~                                                  ,            _                                       .  -             
         [`      )                          ;                  #  . >                =  -                    .     ;                              ,                         -                        1                      
                  h    .                                                             \                             +  , `                        . "        .             <              .       }        _            H .  
             *        (         ]      .                    h                    _}  )                    -                                  ~@                                                !                .           
    .              =                /                                           g                   0                                    :H   '      [                                          '                -          
              .                                             # [     .                                                               .         [        !                                 /                              .   
.~                                  h    H                      \                       .                           ;             ,                                               !            `                        :   
         >                              .                                           `        |                              1             H                                                  `          +                   
                                                      >   *                =                    }             _    {                         .      .                                                             '         
                                       +          0 =                 .                        /              ,                  ]        g   "                                             #  )                            

> /v1/apis · THE FREE API DIRECTORY

Public APIs[1580]

1,580 free public APIs across 52 categories. Filter by auth, CORS, HTTPS support — find what you need to build with.

30 of 1580 APIs
// GAMES & COMICS0211

Chess.com

Chess.com read-only REST API

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// DICTIONARIES0212

Chinese Character Web

Chinese character definitions and pronunciations

NO AUTHCORS: NOOPEN ↗
// DICTIONARIES0213

Chinese Text Project

Online open-access digital library for pre-modern Chinese texts

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// FOOD & DRINK0214

Chomp

Data about various grocery products and foods

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// NEWS0215

Chronicling America

Provides access to millions of pages of historic US newspapers from the Library of Congress

NO AUTHCORS: UNKNOWNOPEN ↗
// ENTERTAINMENT0216

chucknorris.io

JSON API for hand curated Chuck Norris jokes

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// CALENDAR0217

Church Calendar

Catholic liturgical calendar

NO AUTHCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0218

Ciprand

Secure random string generator

NO AUTHHTTPSCORS: NOOPEN ↗
// CONTINUOUS INTEGRATION0219

CircleCI

Automate the software development process using continuous integration and continuous delivery

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// FINANCE0220

Citi

All Citigroup account and statement data APIs

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// GOVERNMENT0221

City, Berlin

Berlin(DE) City Open Data

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// SPORTS & FITNESS0222

City Bikes

City Bikes around the world

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// GOVERNMENT0223

City, Gdańsk

Gdańsk (PL) City Open Data

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// GOVERNMENT0224

City, Gdynia

Gdynia (PL) City Open Data

NO AUTHCORS: UNKNOWNOPEN ↗
// GOVERNMENT0225

City, Helsinki

Helsinki(FI) City Open Data

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// GOVERNMENT0226

City, Lviv

Lviv(UA) City Open Data

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// GOVERNMENT0227

City, Nantes Open Data

Nantes(FR) City Open Data

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// GOVERNMENT0228

City, New York Open Data

New York (US) City Open Data

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// GEOCODING0229

CitySDK

Open APIs for select European cities

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// GOVERNMENT0230

City, Toronto Open Data

Toronto (CA) City Open Data

NO AUTHHTTPSCORS: YESOPEN ↗
// GOVERNMENT0231

civicAPI

Provides live and historic election results for races across the world

NO AUTHHTTPSCORS: YESOPEN ↗
// MACHINE LEARNING0232

Clarifai

Computer Vision

AUTH: OAUTHHTTPSCORS: UNKNOWNOPEN ↗
// GAMES & COMICS0233

Clash of Clans

Clash of Clans Game Information

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// GAMES & COMICS0234

Clash Royale

Clash Royale Game Information

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// SECURITY0235

Classify

Encrypting & decrypting text messages

NO AUTHHTTPSCORS: YESOPEN ↗
// URL SHORTENERS0236

CleanURI

URL shortener service

NO AUTHHTTPSCORS: YESOPEN ↗
// AUTHENTICATION & AUTHORIZATION0237

Clerk

Drop-in React components for authentication and authorization

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DOCUMENTS & PRODUCTIVITY0238

ClickUp

ClickUp is a robust, cloud-based project management tool for boosting productivity

AUTH: OAUTHHTTPSCORS: UNKNOWNOPEN ↗
// ENVIRONMENT0239

Climatiq

Calculate the environmental footprint created by a broad range of emission-generating activities

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DOCUMENTS & PRODUCTIVITY0240

Clockify

Clockify's REST-based API can be used to push/pull data to/from it & integrate it with other systems

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗